Accession Number : AD0802040

Title :   STRUCTURAL SHEET MATERIALS FOR MISSILE APPLICATION: TENSILE PROPERTIES AT ELEVATED TEMPERATURES,

Corporate Author : LOCKHEED MISSILES AND SPACE CO INC SUNNYVALE CA

Personal Author(s) : Kao, Wayne K.

Report Date : 21 APR 1958

Pagination or Media Count : 41

Abstract : The purpose of this investigation was to determine the effect of elevated temperatures on the tensile properties of several missile structural sheet metals. Two groups of alloys were investigated. These were four types of precipitation-hardening stainless steels: 17-7 PH, PH 15-7 Mo, AM-350, and AM-355; and three types of magnesium-thorium alloys: HM 21XA-T8, HK 31A-H24, and HK 31A-T6. All tensile specimens were tested at room temperature and after a 5-min. soak at elevated temperatures. A stain rate of 0.005 + in./in./min. was used. Test specimens, equipment, and procedures are described in detail. With the exception of the results of AM-355 between 400 and 800 F, the tensile properties of each alloy decreased with the increase of temperatures. Test results are presented in the form of tables and curves to show the effect of elevated temperatures on the tensile properties of the materials under investigation. (Author)

Descriptors :   (*METAL PLATES, GUIDED MISSILES), SHEETS, HIGH TEMPERATURE, STAINLESS STEEL, DISPERSION HARDENING, TENSILE PROPERTIES, ALLOYS, MAGNESIUM ALLOYS, THORIUM ALLOYS.

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE